Stenothoe gallensis Walker, 1904

Dugger, Abigail R. & White, Kristine N., 2025, Caribbean Amphipoda (Crustacea) of Panama. Part V: parvorder Amphilochidira, ZooKeys 1259, pp. 57-102 : 57-102

Stenothoe gallensis Walker, 1904

Figs 7, 22E

Probolium polyprion : Catta 1876: 15–27, pl. 2, fig. 1 [not Probolium polyprion Costa, 1853].

Stenothoe gallensis Walker, 1904: 261–262, pl. 3, fig. 19; LeCroy 2011: 722, fig. 569; Krapp-Schickel 2015: 8–10.

Stenothoe cattail : Stebbing 1906: 195.

Stenothoe crenulata : Chevreux 1907: 412–413.

Stenothoe valida : Kunkel 1910: 16–18, fig. 5 [not Stenothoe valida Dana, 1853 ]

Stenothoe sp. A: Rakocinski et al. 1996: 350.

Material examined.

Panama • 1–4 mm • 1 ♀; Bocas del Toro, Pandora ; 9.3278°N, 82.2222°W; depth 10 m; among coral rubble; 10 Aug 2021; K. N. White leg.; USNM 1762917 • 6 ♂, 37 ♀, 3 juveniles; Bocas del Toro, Hospital Point ; 9.3333°N, 82.2185°W; depth 11 m; buoy scraping; 26 June 2023; K. N. White leg.; USNM 1762918 • 3 ♂, 2 ♀; Bocas del Toro, Crawl Caye ; depth 0–1 m; buoy scraping; 29 June 2023; K. N. White leg.; USNM 1762919 .

Diagnosis.

Head anterior margin subtruncate, eye relatively small. Gnathopod 2 of female propodus subovate, palmar angle absent, palm smooth. Gnathopod 2 of male propodus palmar angle absent, with distal palmar tooth (not illustrated). Pereopod 7 merus posterodistal lobe not reaching more than halfway to distal margin of carpus. Uropod 1 peduncle with distoventral spur; inner ramus with one spine-seta. Uropod 3 second article of ramus subequal in length with first article of ramus.

Distribution.

This species has been reported worldwide in tropical and warm temperate seas. Western Atlantic distribution: USA: North Carolina ( Fox and Bynum 1975), Louisiana ( Lewbel et al. 1987), Florida ( Culpepper 1969; Thomas 1993; Nelson 1995; Rakocinski et al. 1996; LeCroy 2011), Texas ( McKinney 1977); Mexico: Veracruz ( McKinney 1977), Quintana Roo ( Oliva-Rivera and Jiménez-Cueto 1992); Cuba: Sabana-Camagüey ( Ortiz and Lalana 1996); Costa Rica: ( Martín et al. 2013); Venezuela: Anzoátegui, Sucre ( Martín and Díaz 2003); Puerto Rico ( Shoemaker 1935); Virgin Islands ( Shoemaker 1935); Panama: Bocas del Toro (present study).

Ecology and remarks.

This species occurs among coral rubble and fouling organisms at depths to 11 m. Panamanian specimens agree closely with previous descriptions of Stenothoe gallensis . Living specimens are white with mottled mustard coloration, orange antennae, and orange eyes.

Figures

Figure 7. Stenothoe gallensis, female, 3 mm, uropods 1–3, head, gnathopod 2 lateral, pereopod 7. Scale bars: 0.5 mm.

Figure 22. Photographs of living specimens unless noted. A. Apolochus dragensis sp. nov.; B. Apolochus pillaii; C. Apolochus cf. picadurus (ethanol-preserved specimen); D. Seba cf. tropica (ethanol-preserved specimen); E. Stenothoe gallensis; F. Stenothoe minuta; G. Stenothoe valida (ethanol-preserved specimen). Scale bars: 1.0 mm.